III sport
IMPREZA WRX STI
IMPREZA WRX STI GRF

III sport

Code No. 80155-AF008

*Discontinued.

Application

Engine EJ25(TURBO)
Model Year 09/02 - 14/08
Remarks

Specification

  FRONT REAR
Damping force adjustment 30 steps 30 steps
Base valve - -
Height adjustable lower bracket
Upper mount Spherical bearing Spherical bearing
Inverted/Normal type Inverted Normal
Damper/Spring layout Coilover Coilover
Spring rate change at factory Possible Possible
Damping force adjustment with wire - -
Helper spring
(Spring rate N/mm)
○( 19.6 ) ○( 19.6 )
Ride Height mm
  Factory *2 Test data Adjustable range
High - Low *3
Drivable range
High - Low *4
FRONT Ride height *1 657 685 ~ 622 685 ~ 622
Against stock -28 0 ~ -63 0 ~ -63
REAR Ride height *1 652 684 ~ 622 684 ~ 622
Against stock -32 0 ~ -62 0 ~ -62

*1. Height from road surface to fender arch.
*2. Height at factory is the data tested at HKS with the setting of Full Kit. (HKS' recommended setting.)
*3. Adjustable range (However, the lowest value may not be road legal.
Even within the adjustable range, car body, arm etc. may contact. In such case, it will be hard to drive.
Damper oil leakage or any other problems caused by low ride height setting from the factory setting will void the warranty of the product.)
*4. Drivable range that there is no contact of car body or arms etc. (However, change of tire/wheel size may cause a problem.)
Caution). Actual data depends on each vehicle.


Kit information

Spring of Full Kit

  F R
Spring rate N/mm(kgf/mm) 118 ( 12 ) 98 ( 10 )
Free height (mm) 170 170
Spring type Straight Straight
Recommended range to change spring rate N/mm(kgf/mm) ±20 ( 2 ) ±20 ( 2 )

Specification of damper

  F R
Damping force (Rebound/Damping)N* 2293 / 414 1098 / 147
Default position of dial 20 20
Remaining damper stroke (Rebound/Damping)mm 56 / 60 49 / 67

* The value of the damping force is at piston speed of 0.1m/sec.

Setting data

  F R
Default Test Drivable limit
High *
Drivable limit
Low *
Default Test Drivable limit
High *
Drivable limit
Low *
Length of
case (mm)
291 317 275 248 272 248
Spring
Set length(mm)
225 225 241 219 219 241
Length to ride hight
adjuster (mm)
32 58 0 22 46 0
Lever ratio 1.10 1.38

* Refer to the above explanation *3 of ride height information for drivable high and low limitations.



Test vehicle information

  F R
Vehicle weight kg 893 (890) 627 (590)
Tire size (Air pressure) kPa 245 / 40 - 18 ( 230 ) 245 / 40 - 18 ( 190 )
Wheel size 8.5 JJ × 18 off 55 8.5 JJ ×18 off 55
Alignment
(Toe/Camber)
Test data 0 mm / 2°36' 0 mm / 1°54'
Standard value 0 ± 3 mm / -0°40' ± 45' 0 ± 3 mm / -1°35' ± 45'

* Test data at HKS.



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